Percolator.



U. U. BUCK.

PERGOLATOR. I

APPLICATION FILED APR.21,1909.

Patented may 24, 1910:

@Mventoz 119i hwooea State 0 UNITED i STATES PATENT OFFICE;

immune-rum or connnnsrom', PENNSYLVANIA, AS$IGNOBOF ONE-HALF r0 cmnwsmanor, or. counassronr, rsnnsrwama.

uncommon.

Specification ofLetters Patent. PatentedMay 2Q, 1916,

Application filed mm 21, 1909. Serial No. 491,371.

To all whom it may concern:

Be it known that-I, CLARENGE U. BUCK, citizen of the United States,residing at Coudle-rs rt, in the county o-ii Potter and f Pen-nsylvania,have invented certain new and useful Improvements in- Percolators,ofwhich the following is a specificatiom v This invention comprehendscertain new and useful improvements in percolators for 'use inpreparingcoffee, tea, or other infusions, and relates more articular-1y todevices of that type embodying a boiler designed to be partially filledwith water and a 'apted when heated to generate steam, the pressure ofthe steamserving to forcibly eject the heated water from the boiler andthrough the charge holder to form the infusion.

' oration; which is susceptible of being conder having upper and lowerheads venien-tly cleaned to mamtai n the. parts in a sanitary condit on;'and which isarrangedto preclude excesslve ressure in the boiler, so

:as to prevent explosions and admit of the device being used with safetWith-this and other ob]ects in view that will more fully appear as thedescription proceeds, the invention consists in certain constructionsand arrangements 01 the parts that 1 shall hereinafterfu-l ly describe,and then point out the novel features of in. the ap ended claim.

'or a full understandin of the invention and the merits thereof an alsoto acquire a knowledge of the details of construction, reference is tobehad to the following descri tion and accompanying drawing, IH WlZLlCFigure 1 is a vertical section or a percolator constructed/in accordancewithmy invention; and Fig. 2 is an enlarged perspective view showing thescrew as perforated disk and lower portion of the c argeholder injuxtaposition. Corresponding and like part are referred, to in thefollowin description and indicated in all the views 0 the drawing by thesam reference characters.

My improved percolator embodies a boiler '1 which in. the presentinstance is in the m of a vertically disposed copper cylinindcr headsbeing connected by a central shaft. 3' that serves to. reinforce thestructure as a whole. The heads 2 are substantially fiat and thepercolator is designed to rest upon the lowerhead, that serves as thebottom of the boiler, while the upper head is adapted to constitute asupport for a cup. or other vessel for collecting the infusion.v Theboiler is formed in its side with an opening 4 by means of whichwater'may be introclosed by a screw plug 5. When heated the boileris.designed to. generate steam, and: as a precautionary measure to preventthe pressure within the boiler from becoming excessive, I provide a.blow-ofi tube 10. that passes through the upper head 2-. This tubeward-1y tapering va ve seat that is controlled by an obconic reliefvalve 11, the stem 12 of the relief valve extending verticallydownwardly through the tube and being atspri-ng 13 The spring exertslinear tension being normally closed against its seat. 7

6 desi ates, a vertically disposed pipe that is rlgidly connected to theboiler and passes downwardly through the up e1; head 2 with its lowerend submerged in the water bottom thereofl Thelower end oi the pipe isopen to aflordegress for the water. Above the boiler the me 6 equippedwith a suitable handle '1 rough the instrumentality of which'the-percolator maybe conyeniently carried from place to place.- Thisppe is bent horizontally at a predetermined downwardly, as shown, thepipe being prior vided at its extremity with a relatively largedownwardly facing screw socket 8:. A valve 9! is. mounted in the pipe inproximity to the socket and is adapted! to be mani latedi by a suitablekey, thus admitting o the valve being convementl turned to close thepipe for a purpose to hereinafter disclosed.

A' charge holder 14 has communication with the upper extremity of thepipe and is ada ted to contain the ground co ee beans, tea eaves, orother charges with which the holder is substantia the cyllow cylinderwhich is open at itsopposite ,duced therein, the opening being normallyon the stem wherebyto. insure oi! the palm and terminating in closeproximity: to the water is to .be im regnated. This charge qly in theform of a hol-.

is formed at its 11 per end with a down:

tached at its lower end toone end of a col] stance above the boiler andis returned ends and is provided in proximity to such ends with threadedportions 14:. One of these threaded portions is adapted to be screwedinto the socket 8, whereby to susend the charge holder in superposedreation to the boiler. The lower end of the charge holder is closed byascrewcap 15 having a threaded annular rim which engages with theadjacent threaded portion l l the bottom of the cap being formed with acentral aperture 16 to afford escape for the infusion. The bottom of thecap preferably tapers downwardly, so as to insure of all of the infusionflowing out of the aperture 16. A perforated disk 17 is preferably heldacross the lower end of the charge holder by the screw cap andconstitutesa strainer to prevent particles of the charge from escapingthrough the outlet with the infusion. I

Before describing the practical use. of my improved ercolator, it is tobe assumed that the boiler is partially filled with water, that theholder contains the desired charge, and that the valve 9 is closed. Thedevice is then set upon the stove, or heat is otherwise suitably ap liedto the boiler, so as to heat the water a d generate steam, the pressureof the steam tending to force the water upwardly in the pipe 6, but thiswater cannot escape into the charge holder however,

because of the closed valve 9. When the pressure of the steam hasreached a certain degree, it is suflicient to unseat the relief valve 11against the force of the spring 13,

some of the steam being thus permitted to escape through the blow-oiltube 10 to prevent the pressure from becoming excessive and preclude apossible explosion. The escape of steam from the blow-off tube serves toapprise the operator that the percolator is ready for use, whereupon acup or other suitable vessel is placed on the upper head 2'below thecharge holder, and thevalve 9 opened Water from the boiler is thenforced through the pipe into the charge holder and through the particlesof the charge packed in'the latter, the infusion escaping through theaperture 16 into the culp or vessel or receiving the same. It w' lbeapparent that when suflicient'infusion has been obtained the flow of thesame may be arrested by closing the valve 9 to cut ofl the supply ofwater from the boiler. It is to be observed that the upper head 2 isprovided with an upstanding rim 18 to retain any drippings.

Among the many advantages residing in my im roved structure, attentionis particularly dlrected to the fact that the holder may be readilydetached from the socket to remove the old charge and introduce a newvone, and that the parts of the charge holder may be separated from eachother, so as to be susceptlble of being thoroughly cleaned tomaintain'the device in a samtary condition.

Having thus described the invention what isclaimed as new is:

A percolator of the character described,

comprising a vertically disposed boiler hav- Y ing aflattop and bottom,the top being designed to support a vessel for collecting the infusion,a vertically disposed water pipe passing through the top of the boilerand extending downwardly therein with its lower end open and arranged inclose proximity to the bottom of the same, the pipe projecting upwardlybeyond said top and htLV-r ing its upper end turned horizontally abovethe boiler and terminating in a downwardly facing threaded socket, acontainer for a charge having its op osite ends open and threaded, oneend of screwed into the socket to suspend the container in verticallyspaced relation to the boiler, a substantially fiat strainer exte'nd ingacross the lower end of the container with the charge resting thereon, ascrew cap disposed at such lower end and embodying an annular rim havinthreaded engagement therewith .and a ottom abutting the strainer tosupport the same in place, the

the container being.

bottom being substantially funnel-shaped and being provided with acentral opening arranged to discharge the infusion into a collectingyessel supported on the top of the boiler, a manually operable valvemounted

